请问为什么选ADue to the financial crisis,the boss,_____company I worked before,has moved his factory to a small city.A.in whose B. whose C.in which D.which

请问为什么选ADue to the financial crisis,the boss,_____company I worked before,has moved his factory to a small city.A.in whose B. whose C.in which D.which
请问为什么选A
Due to the financial crisis,the boss,_____company I worked before,has moved his factory to a small city.
A.in whose B. whose C.in which D.which

请问为什么选ADue to the financial crisis,the boss,_____company I worked before,has moved his factory to a small city.A.in whose B. whose C.in which D.which
主句是：the boss has moved his factory to a small city.
主语是人,而不是物,所以这里的从句应当选择whose,work in 是固定短语,不能说work his factory,所以选择A.

A.in whose
in whose company I worked before
可以分成两个单句:
I worked in the boss 's company before
He ,due to the financial crisis,has moved his factory to a small city.